HydroBASINS lev08 watershed · #2080497460
Bassin de la Loire
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 1 administrative regions : Maine-et-Loire
Sub-basin area
276,5km²
Upstream area
84 715,7km²
Discharge
773,4m³/s
Mean elev.
49m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Thouet3364 km²
- Bassin de la Loire96 km²
1 dept-equivalent regions (GADM L2)
- 277.3 km²100.0% of basin
32 communes (GADM L5)Available for FRA, RWA
- Gennes32.99 km²100% commune
- Chênehutte-Trèves-Cunault28.17 km²100% commune
- Saumur20.29 km²30% commune
- Les Rosiers-sur-Loire18.41 km²70% commune
- Saint-Mathurin-sur-Loire17.90 km²93% commune
- Blaison-Gohier17.72 km²82% commune
- Saint-Rémy-la-Varenne16.04 km²100% commune
- Saint-Georges-des-Sept-Voies15.17 km²100% commune
- La Ménitré11.27 km²62% commune
- Le Thoureil10.93 km²100% commune
- Saint-Martin-de-la-Place9.23 km²61% commune
- Coutures8.94 km²100% commune
- Saint-Jean-des-Mauvrets8.22 km²61% commune
- La Bohalle8.17 km²83% commune
- Juigné-sur-Loire6.26 km²53% commune
- Saint-Clément-des-Levées6.11 km²58% commune
- Louerre5.55 km²37% commune
- La Daguenière5.37 km²45% commune
- Saint-Saturnin-sur-Loire5.28 km²44% commune
- Grézillé5.10 km²29% commune
- Dénezé-sous-Doué4.71 km²20% commune
- Verrie4.03 km²24% commune
- Chemellier3.35 km²29% commune
- Saint-Sulpice2.52 km²100% commune
- Louresse-Rochemenier2.22 km²9% commune
- Mazé1.05 km²3% commune
- Les Ponts-de-Cé0.77 km²4% commune
- Rou-Marson0.61 km²5% commune
- Brain-sur-l'Authion0.51 km²2% commune
- Ambillou-Château0.39 km²2% commune
- Charcé-Saint-Ellier-sur-Aubance0.02 km²0% commune
- Meigné0.00 km²0% commune
9 intersecting protected areas
Loire-Anjou-Touraine
IUCN VRegional Nature Park
253.93 km² overlap
Vallée de la Loire des Ponts-de-Cé à Montsoreau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
48.59 km² overlap
Vallée de la Loire des Ponts-de-Cé à Montsoreau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
34.89 km² overlap
Biotope Protection Order
9.29 km² overlap
Regional Nature Reserve
0.95 km² overlap
Biotope Protection Order
0.56 km² overlap
Cavités souterraines le Buisson et la Seigneurerie (Chemellier)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
Cave Prieur et cave du Château (Cunault)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.06 km² overlap
Cave De La Lande A Coutures
IUCN IVBiotope Protection Order
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 393 distinct species · 74 997 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de la Loire : 34 espèces + 5 bulles famille, 91 interactions GloBI documentées sur 5 types (connectance 12.3%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,5°C
Annual rain
673mm
Moisture idx (CMI)
-0,23
Runoff
202mm/an
PET
871mm
AET
564mm
Mean slope
1,3°
Water table
133cm
Forest
2%
Crops
54%
Urban
1%
Protected
92%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)